[1] Univ Politecn Cartagena, Dept Econ Empresa, Fac Ciencias Empresa, Paseo Alfonso XIII 48, Cartagena 30203, Spain
[2] Univ Tuscia, Dept Innovat Biol Agrofood & Forest Syst DIBAF, Via San Camillo del Lellis snc, I-01100 Viterbo, Italy
[3] Nat Resources Inst Finland Luke, Latokartanonkaari 9,PL 2, Helsinki 00791, Finland
[4] Univ Murcia, Dept Econ Aplicada, Campus Espinardo, E-30100 Murcia, Spain